Abstract
A hydrogen sensing probe with an optical detector detected the gas hydrogen, contains a substrate with a porous surface, and attached to a porous surface with palladium and a temperature sensitivity of the fluorescent compounds of the reaction layer; hereby, fluorescent compounds by the optical detector generates fluorescence excitation light source, hydrogen gas and palladium in the reaction temperature, so that the fluorescence intensity generated by the impact of changes in temperature for the optical detector detected the gas hydrogen.